In Geochemistry, there are a number of tools that run on all, displayed, or a selection of assay channels.
If your assay channels are not identified here are some tips on how to update the channel attributes.
Identify Assay Channels
The assay channels need to be identified with an ASSAY "class" in the channel attributes. If your fields are not being identified automatically, you can fix this during or after importing your sample results.
1. Identify assay channels during import
If the column header name is a member of the periodic table of the elements, such as "Cu" (or "cu", as this test is not case-sensitive) then it will be labelled as an Assay.
For more complex cases, such as oxides, you can add to the assaylist.csv (find this file in C:\Program Files (x86)\Geosoft\Oasis montaj\user\csv\assaylist.csv).
You can add the field names directly to the list:
Or items can contain * and ? to match multiple or single characters:
2. Identify assay channels in an existing database
If the channels are already in a database, you can use GeochemImport > Assay Attributes > Set Attributes to assign the ASSAY class. Choose the fields that need to be identified as Assays and the class will be attached to the channel attributes.
Update Channel Labels
You can update the Labels for the assay channels as well. Labels appear in reports and symbol legends so that a channel named "FEO2_PPM_" can have a label that says "FeO2 (ppm)"
- Export the current attributes using GeochemImport > Assay Attributes > Export Attributes
- Edit the CSV file. You can make the edits in a simple text editor like Notepad. Be sure to re-save it as a CSV file if you edit it in Excel.
- Import the updated attributes to the database using GeochemImport > Assay Attributes > Import Attributes.
Save your assay attribute table in a safe place so it can be re-used on other projects will similar imported assay fields.